A Dumbbell CaBi2O4 Photoelectrode for Photoelectrochemical Water Splitting. Issue 21 (14th September 2017)

• Record Type: Journal Article
• Authors: Wang, Xuan; Liu, Zhihua; Liu, Zhifeng
• Is Part Of: ChemCatChem. Volume 9:Issue 21(2017)
• Page Start: 4029
• Page End: 4034
• Publication Date: 2017-09-14
• Subjects: electrochemistry -- films -- nanostructures -- photochemistry -- water splitting; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201700938
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: This paper describes a promising film based on the dumbbell‐shaped CaBi2 O4 nanostructure that is applied in photoelectrochemical (PEC) water splitting as a photoelectrode for the first time. The morphology and microstructure of CaBi2 O4 were characterized in detail. PEC measurements showed that the dumbbell‐shaped CaBi2 O4 nanostructure film, on the basis of the optimal hydrothermal time, exhibited higher photoelectrochemical activity, as the photocurrent density reached up to 1.19 mA cm −2 . The remarkable PEC performance may stem from excellent light absorbance and efficient charge–hole pair separation and collection. This research indicates that the dumbbell‐like CaBi2 O4 nanostructure film has enormous potential in PEC water splitting. Abstract : Lickety‐split : A dumbbell‐shaped CaBi2 O4 nanostructure film is hydrothermally prepared and used as a photoelectrode for photoelectrochemical water splitting. This photoelectrode exhibits a high photocurrent density of 1.19 mA cm −2 . The remarkable performance may be attributed to improved light absorption, an ideal band gap value, and efficient charge–hole pair separation and collection.